Help! Why is the output of variable String "null"? ("Dies Game" in my profile)

Question

I'm in a process of learning Java. So, I know the code is horible but I really need a help. This is my first programme. Could help me with the problem? Corrections of my code are welcome. ("Dies Game" in my profile)
https://code.sololearn.com/cSe5Pmw41NTL/?ref=app

Answer 1

maybe it's because your global variable in that class isn't inicialized in its contructor (in fact, i don't see any constructor in it). If you're going to make an object of whatever class, you have to inicialize its variables in its respective constructor. (sorry for my english. I'm learning)